function MM_openBrWindow(theURL,winName,features) {
  window.open(theURL,winName,features);
}

function toggleLayer(mainID, submainID) {

    var elem, vis, elemTab;
var sectionArray = ['2','7','12','25'];
var subsectionArray = [
['3', '4', '5', '6', '28'], 
['8', '9', '10', '11', '29'], 
['17', '19'], 
['26', '27']
];
    for (var i = 0; i < sectionArray.length; i++) {
        if (mainID == sectionArray[i]) {
            for (var j = 0; j < subsectionArray[i].length; j++) {

                // block
                if(document.getElementById)
                    elem = document.getElementById(subsectionArray[i][j]);
                else if(document.all) // stary IE
                    elem = document.all[subsectionArray[i][j]];
                else if(document.layers) // stary netscape
                    elem = document.layers[subsectionArray[i][j]];
                vis = elem.style;

                if (submainID == subsectionArray[i][j]) {
                    vis.display = 'block';
                } else {
                    vis.display = 'none';
                }

                // class
                var idTab = subsectionArray[i][j] + 'Tab';
                if(document.getElementById)
                    elemTab = document.getElementById(idTab);
                else if(document.all) // stary IE
                    elemTab = document.all[idTab];
                else if(document.layers) // stary netscape
                    elemTab = document.layers[idTab];

                if (submainID == subsectionArray[i][j]) {
                    elemTab.className = 'selected';
                } else {
                    elemTab.className = '';
                }
            }

        }
    }
}